make some soup is packing a bowl.
bring the soup is make sure you bring the weed.
soup kinda became a code word i used after me and friends were calling to get some pot and my friend's father walked in as he was saying "make sure you pack a bowl." when he saw his dad he was like "a bowl of soup! a bowl of soup!"
when i'm really stoned i say i'm hot.
i'll call a joint a J.
there's more, but those are the main ones.